Building material



FIG. 1 is a front and right-side perspective view of a building material;

FIG. 2 is another front and right-side perspective view of the building material of FIG. 1 ;

FIG. 3 is a back perspective view of the building material of FIG. 1 ;

FIG. 4 is an enlarged front perspective view of a portion of the building material of FIG. 1 ; and,

FIG. 5 is a front perspective view of the building material of FIG. 1 .

The broken lines depict the limits of the enlarged views and form no part of the claimed design. 

CLAIM The ornamental design for a building material, as shown and described. 